will be getting my new moteck sg2100 and coolsat pro along with winegard 76cm dish and invacom o.3 universal lnbf.. my question is my true south, can it be 119w or 121w. my long. is -120.61154 and lat. is 37.398019...would you consider that 121w would be true south, as it seems will not have to move the 0 skew on motor. what do you guys think? cant wait to play around, especially after reading iceberg review on coolsat pro!